anavabi

Hi There,
Re: 2006 ML500
When engine is warmed up, often not always, when stopped and in idle, engine keeps trying to install and then comes back on within a second or to. If I shift to N, the hiccup stops and engine runs smoothly.
Any insight will be appreciated.
Thanks,

flybd5

You need to 1. post your vin to your profile and 2. have the car's computer read with a scanner that understands MB codes and post the results of that.

Maj. Dundee

What does this mean............... engine keeps trying to install ?

anavabi

Maj. Dundee

I had the same exact problem with my 500 and believe it or not changing the Trans. filter and fluid corrected the problem.

anavabi

Would you please let me have the instructions for this work.
Also what is a good code reader apart from the Star which is too costly for DIYer.
Thanks

Maj. Dundee

Here is the you should buy. It will read every and all modules in your veh.

As for changing the trans. filter and fluid, it is not like the old days where you fill the fluid through a fill pipe in the eng. compartment. Almost every manufacturer has eliminated the fill pipe and you now need a hand or pressure pump to inject the fluid upwards into the pan.

If you do not have automotive experience, doing this by yourself could damage your transmission. You decide what you want to do.

anavabi

Thanks Maj. I'll have to watch it couple of times to see if I can do it without a car lift!
As I'm offered a good deal on an Innova 3160g, would this be an equivalent to the one you recommend?
Thanks

Maj. Dundee

You asked me for my recommendation and now you want to know about something different. Make your own decision.

flybd5

If you have never done this before, take it to a shop and have someone who knows what they are doing do the work. Doing it without a lift is masochistic, and as you can see from the video you need special tools and a proper scanner. Spend a little money and get it done right, or do it wrong, ruin your transmission and that's the end of your car.

I'm out of this thread.

anavabi

Maj. Dundee

It's BS. It's an old wives tale.

anavabi

fair enough. Thanks

flybd5

So your mechanic says not to change it because you've never changed it? WTF... you're using the wrong mechanic.

anavabi

He says that the worn clutch pack is now relying on metal debris in between discs to generate friction. If the deris is removed by new oil, especially if flushed, the worn out cluch pack will have much less friction.

Maj. Dundee

Now you have to make a decision.

flybd5

I wonder how he came to the conclusion the clutch pack is worn out without disassembling the transmission... If what he said were true, you'd have a lot more problems than a "hiccuping" car.

anavabi

I can live with the hiccup for now. Thanks for your insights.

flybd5

If you think you have problems now, wait until the entire tranny goes because you didn't service it.

anavabi

You're making me nervous! I'll have to think about it harder.

anavabi

So I just checked with the Service at the local MB, he confirmed that for older model it's best to leave the transmission oil as is, for the same reasons.
Go figure!

texterted

Probably because the sump pan bolts often snap when you try to remove them.

flybd5

The service schedule for your car says the transmission fluid must be changed ONCE at 39,000 miles. Do you have a record of it ever having been done?

anavabi

For sure it hasn't been done.
So why the manual doesn't reflect that?

flybd5

Because the owner's manual and the service schedule manual are two different books. You should have both.